The trick to spotting X-Wings is to look for the rectangles of possible candidates. If you find four candidates on the corners of a rectangle, check to see if they are an X-Wing for both rowsandcolumns – that might save you some extra time! Some more examples X-Wing in rows for 8...
6. X-Wing This method can work when you look at cells comprising a rectangle, such as the cells marked in red. In this example, let’s say that the red and blue cells all have the number 5 as candidate numbers. Now, imagine if the red cells are the only cells in columns 2 and ...
The X-Wing and Swordfish are examples of a more general rule. This is always satisfying for a mathematician, by looking at simple examples it is possible to extend the same logic to a general rule (this is the basis of proof by induction ➚). If you identify pairs of squares in the...
The simplest example of this is the X-Wing. Here four groups are logically inter-linked to form a box. If the possibilities form a particular pattern then the corners of the box must be in one of only two configurations. The Sudoku rules are applying a two-dimensional constraint involving ...
- XYZ-WING, X-WING, W-WING, WXYZ-WING - SUE DE COQ, REMOTE PAIR, BI-VALUE GRAVE - TURBOT, X-CHAIN, XY-CHAIN, COLORING - SWORDFISH, JELLYFISH, SQUIRMBAG, WHALE - 3D MEDUSA, ALTERNATING INTERFERENCE CHAIN - Upper levels are challenging, extreme, diabolic, almost unsolvable - UNLIMITED...
In other apps, it was hard to learn advanced techniques because there was rarely an opportunity to find an x wing or a swordfish. In this app, I find both relatively often, making it easier for me to learn how to spot them. I like that you can long press on a number and then ...
• Finned X-Wing • Sashimi Finned X-Wing Advanced Strategies • Singles Chains a.k.a Simple Colouring • Multi-Colouring • Y-Wing a.k.a XY-Wing • Y-Wing Chain • XY-Chains • XYZ-Wing • WXYZ-Wing • Aligned Pair Exclusion ...
I mean, I can detect skyscrapers or X-wings more easily. When see 2 digits in a row or column with a strong link, I can see the the patterns but for this example, I have to follow the chain twice for each number (r1c2 and r2c1 in this case). In other examples it's enough ...
In other apps, it was hard to learn advanced techniques because there was rarely an opportunity to find an x wing or a swordfish. In this app, I find both relatively often, making it easier for me to learn how to spot them. I like that you can long press on a number and then ...
In other apps, it was hard to learn advanced techniques because there was rarely an opportunity to find an x wing or a swordfish. In this app, I find both relatively often, making it easier for me to learn how to spot them. I like that you can long press on a number and then ...